Device for changing the transmission ratio between a turbine shaft and a shaft of a starter-generator of an aeroengine

A device for changing a transmission ratio between a turbine shaft and a shaft of a starter-generator of an aeroengine, the device including: first and second fixed gear wheels carried by the shaft of the starter-generator; first and second idler gearwheels carried by the turbine shaft, and meshing...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	GAULLY BRUNO ROBERT
Format:	Patent
Sprache:	eng
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING BRAKES CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION CLUTCHES COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS COUPLINGS FOR TRANSMITTING ROTATION ENGINEERING ELEMENTS AND UNITS GAS-TURBINE PLANTS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 LIGHTING MECHANICAL ENGINEERING TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A device for changing a transmission ratio between a turbine shaft and a shaft of a starter-generator of an aeroengine, the device including: first and second fixed gear wheels carried by the shaft of the starter-generator; first and second idler gearwheels carried by the turbine shaft, and meshing respectively with the first and second fixed gearwheels to define different gear ratios; a changeover sleeve interposed between the idler gearwheels and mechanically coupled to the turbine shaft, the changeover sleeve being movable in translation on the turbine shaft between two coupling positions; and a mechanism causing the changeover sleeve to move in translation automatically from either one of its coupling positions to the other one when the sum of torques between the turbine shaft and the starter-generator shaft changes sign.